Mongolian shamanism (Mongolian: Бөө мөргөл — Böö mörgöl), more broadly called the Mongolian folk religion, or occasionally Tengerism, refers to the animistic and shamanic ethnic religion that has been practiced in Mongolia and its surrounding areas (including Buryatia and Inner Mongolia) at least since the age of recorded history. In the earliest known stages it was intricately tied to all other aspects of social life and to the tribal organization of Mongolian society. Along the way, it has become influenced by and mingled with Buddhism. During the socialist years of the twentieth century, it was heavily repressed, but has since made a comeback.